MRI for Technologists:
MR Image Formation and Imaging Techniques

Format: Online Activity
Credit: 3.75 ARRT Category A
Fee for Credit Certificate: $25
 

Click ENROLL NOW to view or download this program and complete the POSTTEST online.

PROGRAM INFORAMTION
MRI for Technologists is a training program designed to meet the needs of radiologic technologists entering or working in the field of magnetic resonance imaging (MRI). These units are designed to augment classroom instruction and on-site training for radiologic technology students and professionals planning to take the review board examinations, as well as to provide a review for those looking to refresh their knowledge base in MR imaging.

COURSE OVERVIEW
The skill of the technologist is the single most important factor in obtaining good quality diagnostic images. A successful MRI examination is the culmination of many factors under the direct control of the technologist.

MR Image Formation and Imaging Technique introduces the learner to the fundamental pulse sequences used for the majority of MRI acquisitions, the operator-controlled parameters that affect image quality, how images can be enhanced by the use of gadolinium-based contrast agents, how an image is generated, and how the interplay of spatial resolution, signal-to-noise ratio, and image contrast affect image quality.

After completing this educational material, the reader should be able to:

• Describe the two fundamental pulse sequence categories
• Explain the time parameters TE and TR
• Discuss how the flip angle affects image appearance
• Describe how images can be enhanced with the use of contrast agents
• Describe how 2D and 3D images are generated using gradient magnetic fields
• Explain the concepts of k-space and Fourier transform
• Adjust spatial resolution and image contrast to optimize SNR and produce diagnostic images
• List several additional imaging techniques and their contrast properties
• Describe how these techniques differ from conventional spin-echo and gradient-echo pulse sequences
• Explain characteristics that influence image quality
• Adjust common types of operator-controlled parameters

EDUCATIONAL CREDIT
This program has been approved by the American Society of Radiologic Technologists (ASRT) for 3.75 hours of ARRT Category A continuing education credit.

HOW TO RECEIVE CREDIT
Estimated time to complete this activity is 3.75 hours. The posttest and evaluation are required to receive credit and must be completed online.

• In order to access the posttest and evaluation, enroll in the online course.
• Read the entire activity.
• Log in to your account at www.icpme.us to complete the posttest and evaluation, accessible through the course link in your account.
• A passing grade of at least 75% is required to be eligible to receive credit.
• You may take the test up to three times.
• Upon receipt of a passing grade, you will be able to print a certificate of credit from your online account.
• There is a $25 fee to process a certificate of credit.

FACULTY
Daniel R. Thedens, PhD
Associate Research Scientist
Department of Radiology
Division of Diagnostic Physics
University of Iowa Health Center
Iowa City, IA

Daniel R. Thedens received his doctorate in electrical engineering from Stanford University. In addition to his research and teaching responsibilities at the University of Iowa, Dr. Thedens is an Associate Research Scientist in Department of Radiology, Division of Diagnostic Radiology - Physics, at the University of Iowa Health Center. He also serves as co-chair for the Radiology MR Research Advisory Board as well as Technical Director of the Small Animal MRI Facility.

Dr. Theden’s research interests are 3D MR image acquisition, rapid MR acquisition techniques, imaging of cartilage and other orthopaedic applications, cardiac MRI, and MR image processing.

We are grateful to Dr. Thedens for updating his original work, released in 2009.

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SUPPORTED BY AN EDUCATIONAL GRANT FROM


 

DISCLAIMER
Participants have an implied responsibility to use the newly acquired information to enhance patient outcomes and their own professional development. The information presented in this activity is not meant to serve as a guideline for patient management. Any procedures, medications, or other courses of diagnosis or treatment discussed or suggested in this activity should not be used by clinicians without evaluation of their patient’s conditions and possible contraindications on dangers in use, review of any applicable manufacturer’s product information, and comparison with recommendations of other authorities.